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Robert Hooke took a look at a of cork underneath a microscope and noticed that, up close, it looked like it was made of empty “cells” like the ones monks slept in at monasteries (or prisoners in jail)
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Brothers Hans and Zacharias Jenssen developed the first compound microscope.
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Schleiden, a botanist, studied hundreds of plants under his microscope and, in 1838, realized that each and every one was made of the cells.
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In 1855, Rudolf Virchow published a book stating his belief that all cells are made from other living cells.
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In 1839, Theodor Schwann realized that the nucleus of Schleiden’s plant cells was very similar to what he noticed in animal cells under his microscope.
Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.